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Chapter 4 Quiz
Terms in this set (20)
Which element is include in the fire tetrahedron that is not part of the fire triangle model?
chemical chain reaction
In order to burn, fuel must be in a ____ state
Which statement about smoke is accurate?
Smoke has the potential to burn
Which is a measure of heat energy transfer rate?
Heat transfers from one body to another by three mechanisms: conduction, radiation and
A fuels _____ is the total amount of thermal energy released when a specific amount of that fuel burns
heat of combustion
Which type of fuel is difficult to extinguish using water as the only extinguishing agent?
Liquids that are less dense than water
What is the primary consideration affecting how easily solid fuels ignite?
surface to mass ration
What is the primary oxidizing agent in most fires?
oxygen in the air
The range of concentrations of fuel vapor and air within which combustion can occur is the
flammable (explosive) range
Which is an example of a self sustaining chemical reaction?
The 4 stages of fire development are
incipient, growth, fully developed, decay
Which stage of fire occurs when all combustable materials in the compartment are burins at their peck heat release rate based on the available oxygen?
Development of a fire in the incipient stage depends largely upon the
characteristics and configuration of the fuel involved
If there are no opening for lateral movement during the growth stage of a fire, the hot gases released during combustion will fill the compartment
starting at the ceiling and filling down
Most residential fires that develop beyond the incipient stage become
When a compartment fire is in the ventilation limited decay, _____ can trigger flashover quickly
introduction of new oxygen
Which statement about flow paths and ventilation in a structure is accurate?
When FFs make entry into a building, they establish new flow paths between the fire compartment and exterior vents of the building
The total quantity of combustible contents of a building, space or fire area is referred to as the
Slower fire development in large compartments is due to the ____ and the increased distance that radiated heat must travel from the fire to the contents that must be heated
greater volume of air
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